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The massive star binary fraction in young open clusters - III. IC 2944 and the Cen OB2 association
H. Sana, G. James, E. Gosset
Using an extended set of multi-epoch high-resolution high signal-to-noise ratio optical spectra, we readdress the multiplicity properties of the O-type stars in IC 2944 and in the…
CoRoT observations of O stars: diverse origins of variability
R. Blomme, M. Briquet, P. Degroote +26
Six O-type stars were observed continuously by the CoRoT satellite during a 34.3-day run. The unprecedented quality of the data allows us to detect even low-amplitude stellar pulsa…
Variability in the CoRoT photometry of three hot O-type stars. HD 46223, HD 46150 and HD 46966
R. Blomme, L. Mahy, C. Catala +15
The detection of pulsational frequencies in stellar photometry is required as input for asteroseismological modelling. The second short run (SRa02) of the CoRoT mission has provide…
Investigating the X-ray emission from the massive WR+O binary WR 22 using 3D hydrodynamical models
E. R. Parkin, E. Gosset
We examine the dependence of the wind-wind collision and subsequent X-ray emission from the massive WR+O star binary WR~22 on the acceleration of the stellar winds, radiative cooli…